HSC Extension 1 Mathematics Predictions / Thoughts (3 Viewers)

[Fabrizio]

yes, they show how raw marks from past years converted to aligned marks (the marks you get back)

and then they are scaled again against all courses for an aggregate mark which determines atar?

 

[black.mamba]

and then they are scaled again against all courses for an aggregate mark which determines atar?

scaled marks are determiened by uac, who use your top 10 units for scaled mark to determine your atar. a scaled mark of 90 in mx2 is equivalent to a scaled mark of 90 in maths standard.

aligned marks are calculated separately by nesa, who assign a certain level of achievement in a subject as band 6 (aligned 90), band 5, etc. aligned marks of 90 in mx2 and maths standard, for example, have very different scaled marks

 

[Xanthi]

I think an 80 raw mark B6 cut off is a bit high... Most years it's around 73-77 and this exam was pretty difficult considering Q14

In my opinion the q14 trig was somewhat more straightforward than last year's hence the increased cutoff? The binomial was would be relatively challenging and accounted for in my question band judgement.

 

[black.mamba]

scaled marks are determiened by uac, who use your top 10 units for scaled mark to determine your atar. a scaled mark of 90 in mx2 is equivalent to a scaled mark of 90 in maths standard.

aligned marks are calculated separately by nesa, who assign a certain level of achievement in a subject as band 6 (aligned 90), band 5, etc. aligned marks of 90 in mx2 and maths standard, for example, have very different scaled marks

so pretty much aligned marks arent used to calculate your atar, but they are the only marks we receive, hence atar calcs convert your combination of aligned marks to an estimated atar

 

[Fabrizio]

so pretty much aligned marks arent used to calculate your atar, but they are the only marks we receive, hence atar calcs convert your combination of aligned marks to an estimated atar

Not going to lie this whole year i have been putting in raw marks, when my atar would actually be like 3% higher with aligned marks

 

[JaidynK99]

did anyone actually get more than 50% of Q14?

 

[Althacommie]

did anyone actually get more than 50% of Q14?

I lost about 10 marks from that stupid question.

 

[大きい男]

did anyone actually get more than 50% of Q14?

I think I got 10/15. In my opinion, 14a was quite disappointing - they have done questions like that before and it honestly seemed a bit lazy. 14b, however, was a nice one, even though it was probably easier (unless you don't do 4U or haven't practiced those questions)

 

[NoUsername]

did anyone actually get more than 50% of Q14?

I did, I was able to do everything for the trig identity question and I think it's all correct. I think I only did half of part iv of the combinatorics, but that is hopefully only 1 mark lost for question 14. I think I also lost a mark for the f(x)=g(x) question because I just said if f'(x)=g'(x), then the functions are separated by a constant and I just subbed in 1, and since that was equal said the constant was 0 =_=

 

[Skkkkkkkkkk]

who else fucked that test

 

[大きい男]

who else fucked that test

Looking at discussion groups with people who better represent the average student, it seems a lot of people did.

 

[anna.linden]

did anyone actually get more than 50% of Q14?

i think i got all of it (apart from saying why theta=25π/18 as opposed to 13π/18)

 

[JaidynK99]

I lost about 10 marks from that stupid question.

yeah haha me too... i feel like crying

 

[JaidynK99]

I did, I was able to do everything for the trig identity question and I think it's all correct. I think I only did half of part iv of the combinatorics, but that is hopefully only 1 mark lost for question 14. I think I also lost a mark for the f(x)=g(x) question because I just said if f'(x)=g'(x), then the functions are separated by a constant and I just subbed in 1, and since that was equal said the constant was 0 =_=

ohh bro, unlucky there

 

[JaidynK99]

who else fucked that test

well i mean, i kinda lost like 25 marks just in the questions i couldnt do.......

 

[thomson2354]

yeah haha me too... i feel like crying

I'm going to cry because I just realised that I made a stupid mistake in the volume question by using the auxiliary angle for finding the intersection... even tho I did all the integration correct, because I wasn't thinking I'm now gonna lose like 3 marks RIP..

 

[JaidynK99]

i think i got all of it (apart from saying why theta=25π/18 as opposed to 13π/18)

wow, well done!

 

[JaidynK99]

I'm going to cry because I just realised that I made a stupid mistake in the volume question by using the auxiliary angle for finding the intersection... even tho I did all the integration correct, because I wasn't thinking I'm now gonna lose like 3 marks RIP..

haha, wasn't the intersection at like Pi/3? or Pi/6? or something? one of those

 

[anna.linden]

wow, well done!

thank u, im convinced it's the universe trying to make up for me being the only one in my class feeling like crap after ext2

 

[thomson2354]

haha bro, wasn't the intersection at like Pi/3? or Pi/6? or something? one of those

yeah it was pi/6...